Fix an issue that caused node-spawn-wrap failed to work on Windows,

Author: cheton

package.json

@@ -12,7 +12,7 @@
     "lint": "eslint ./src",
     "lint:fix": "eslint --fix ./src",
     "precommit-check": "npm run lint",
-    "test": "tap test/*.js --coverage --nyc-arg=--require --nyc-arg=babel-register --nyc-arg=--require --nyc-arg=babel-polyfill",
+    "test": "tap test/*.js --node-arg=--require --node-arg=babel-register --node-arg=--require --node-arg=babel-polyfill",
     "coveralls": "tap test/*.js --coverage --coverage-report=text-lcov --nyc-arg=--require --nyc-arg=babel-register --nyc-arg=--require --nyc-arg=babel-polyfill | coveralls",
     "dev": "cd examples; webpack-dev-server --hot --inline --host 0.0.0.0 --port 8000 --content-base ../docs"
   },